Atomic Pro C1 is a fast but friendly boot for classic cross-country skiers, particularly if you want a boot to help build confidence and technique. It comes with a mid-cut which provides a little extra ankle support, an internal heel counter for good support around the back, and a lacing system that wraps the foot for a strong hold. The Sport Fit is snug but not too narrow - and the step-in is super easy. Live Fit foam inside the boot molds to your foot for an incredibly comfy individual fit. Finally, the boot works with all 2-rail bindings including NNN and Turnamic. A great choice for all athletic cross-country skiers.